This simple 3-step procedure will fix the swapped controller problem that exists on rev 0.1 boards.
Cut the following two traces on the back side of the board.
Solder a bodge wire to pin 5 of RN101 and pin 19 of U402. Secure the wire with Kapton tape.
Solder a bodge wire to pin 19 of U401 and pin 31 of U101. Secure the wire with Kapton tape.